GPLUS Silicone Coolant Radiator Hose Kit For KTM LC4 620 625 640 660 Black Made of High Quality Silicone For High Temperature and High Boost Application. Full 4.5 mm Thickness 3-Ply Nylon for Strong Reinforcement Withstands Operating Temperatures from -65F to 500F Degrees Fahrenheit Working pressure 85 PSI / Burst pressure 245 PSI